Method of forming a cast assembled multiple different part end product



May 28, 1968 L. H. MORIN 3,334,949

METHOD OF FORMING A CAST ASSEMBLED MULTIPLE DIFFERENT PART END PRODUCT Filed May 19, 1966 INVENTOR. Lou/5 H. Mam/v HTTORNL'Y United States Patent 3,384,949 METHOD OF FORMING A CAST ASSEMBLED MULTIPLE DIFFERENT PART END PRODUCT Louis H. Morin, Bronx, N.Y., assignor to Coats & Clark Inc., New York, N.Y., a corporation of Delaware Filed May 19, 1966, Ser. No. 551,434 8 Claims. (Cl. 29-430) ABSTRACT OF THE DISCLOSURE Method of intercasting three interconnected parts to form pivoted connections and a continuous come-apart ring.

This invention deals with the production of a cast end product, wherein the product comprises three or more ditferent parts, which are cast one upon another at a series of stations and coupled with each other and, wherein, the coupling comprises pivots facilitating swinging movement of the parts of the end product. More particularly, the invention deals in a method, wherein the pivots are concealed within the parts, particularly when the parts are in the fully collapsed position.

Still more particularly, the invention deals with the formation of an end product comprising an open ring, having a pivotal latch part for closing the ring and a lock lever part pivoted to the latch part for movement of the latch part into operative position and in retention of the latch part in such position.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

FIG. 1 is an enlarged side elevation of a three part end product made according to my invention, parts of the construction being broken away and shown in section and omitting part of the end product.

FIG. 2 is a view, similar to FIG. 1, illustrating the parts in a diiferent position.

FIG. 3 is a plan view of a part of the structure, as seen in FIG. 1, with parts broken away and in section.

FIG. 4 is a section on the line 4-4 of FIG. 2.

FIG. 5 is a section on the line 5-5 of FIG. 1.

FIG. 6 is an enlarged side view showing the coupling hook ends of the device in operative engagement, with parts of the structure broken away and in section.

FIG. 7 is a view, similar to FIG. 3, showing only the K lock lever and illustrating a modification; and

FIG. 8 is a diagrammatic view showing the three primary casting stations for successive formation of the three cast parts in production of the resulting end three-part product.

In the drawing, 10 represents one part of the product, namely an open ring part; 11 represents a lock lever part and 12 represents a latch part.

The ring part has, at one end, a reduced tongue 13, having a rounded end 13, the tongue adjacent the end having side pivot recesses 14, note FIGS. 3 and 4. Where the tongue end 13 joins the body portion of the ring curved side stop shoulders 15 are provided, checking movement of the lock lever, as later described. The other end of the ring part 10 terminates in a coupling hook 16.

The lock lever part 11 has what might be termed a hood-like fingerpiece portion 17, including depending side walls 18 shaped, as seen at 19 in FIG. 2, to fit upon the stop shoulders 15, as will appear from a consideration of FIG. 1 of the drawing. The part 11 includes a forked extension 20, this extension having opposed pivot aper- "Ice tures 21, note FIGS. 3 and 5. The extension 20 has rounded edges, as seen at 20 in FIG. 2 of the drawing.

The latch part 12 has a forked end 22, note FIGS. 2 and 3, this end defining side walls 23 having projecting pivots 24 seating in the apertures 21, note FIGS. 3 and 5. At this time, it is also to be noted, in FIGS. 3 and 4, that the forked extension 20 has inwardly projecting pivots 25, which are arranged in the pivot recesses 14 of the tongue 13.

The latch part 12 includes a reduced end portion 26, between which and the forked end 22 are formed shoulders 27, as best seen in FIG. 3. Adjacent the shoulders 27, the reduced end portion 26 includes a ring or eye 28, which can be utilized for coupling the end product with any other support. At the end of 26 is a hook 29, similar to the hook 16, and these hooks are adapted to engage each other when the end product is in a closed ring position, the engagement of the two hooks being clearly shown in FIG. 6 of the drawing. It will appear that the hooks have projecting sides 16, 29' which are adapted to engage recesses in the coupling hook ends, 16' engaging a recess 29" in 29 and 29' engaging a recess 16" in the hook end 16. This engagement is clearly illustrated by the sectioning in FIG. 6 of the drawing. By this structure, the ends 16 and 19 are retained against lateral separation from each other, when they are coupled together.

Turning now to FIG. 7 of the drawing, at 11' I have shown a modified form of lock lever part, which differs from the part 11 primarily in providing on the upper or outer surface of the hood portion 17 longitudinally spaced teeth or projections 30, which will provide a posi tive grip by the fingers in movement of the lock lever part from the position shown in FIG. 2 to the position shown in FIG. 1 when 16 and 29 are in coupled engagement with each other.

Considering FIG. 1 of the drawing, it will appear that the part 10 is recessed, as seen at 31, adjacent the undercut end 32 of the part 11 and this facilitates lift of the part 11 in movement of the same from the closed or locked position of FIG. 1 to the open position of FIG. 2.

Turning to the diagrammatic showing in FIG. 8 of the drawing, here 33, 34 and 35 represent three successive casting stations of a pair of dies and 36 would represent a trimming station, not shown, as it is well-known in the art, which would be below the station 35. At 37 is shown the gate or sprue for injection of casting material into the respective cavities to form the part 10 at station 33, the part 11 at station 34 and the part 12 at station 35. The gate or sprue 37 has branches 38 leading to the cavity forming the part 10, 39 leading to the cavity forming the part 11, when 10 is positioned in said cavity, and 40 leading to the cavity forming the part 12, when both parts 10 and 11 are in said last named cavity.

In forming the part 10 at station 33, the recesses 14 will be formed; whereas, in forming the part 11 at station 34, the apertures 21 are formed. At the same time, the pivots 25 will be formed in the recesses 14 of the part 10, when positioned at station 34, In like manner, when the part 12 is formed at station 35, the pivots 24 will be formed in the apertures 21.

From the foregoing, it will be apparent that, in successive casting operations, the part 10 is moved from station 33 to 34; the assembled parts at 34 would then be moved to station 35 and the complete assemblage will move from 35 to the trimming station 36, 'below and beyond station 35, where the gates or sprues will be trimmed from the assembled multiple different part end product, such as more clearly described in connection with the showings in FIGS. 1 to 6, inclusive.

In describing the several casting operations, it will be kept in mind that, in each operation of the casting machine, a finished product is formed. In other words, when a first part has been moved to the second station, as and when the second part is cast on the shifted first part, another first part is formed at the station 33. Thus, it will be apparent that, in each casting cycle of the machine, a first, second and third part are simultaneously formed.

It will be understood that the showing in the accompanying drawing is illustrative solely of one method of carrying my invention into effect, as various types and kinds of different parts can be cast one upon another in forming a multiple end product of any type or kind and, while pivotal coupling of the parts is here specifically dealt with, in many instances, adjacent cast parts need not have a relative movement one with respect to the other and a coupled relationship between the parts alone would be accomplished. In the accompanying drawing, the parts have been illustrated by sectioning as metallic parts, as this is a simple way of showing the invention. The parts can, however, be composed of plastic materials in the production of various types and kinds of end products.

For purposes of description, the pivot portions, such as 14, 25 and 21, 24, can be termed coupling elements between adjacent parts of the resulting end product.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. The method of producing an end product consisting of a multiple of different parts formed one upon the other, which comprises forming a first part at one station, said part including an element of a coupling, forming a second different part on a first part when positioned at a second station, the second part having an element engaging the element of the first part in coupling said parts, said second part further including another element of a coupling, then moving the assembled first and second parts to a third station forming, at said third station, a third part different from said first and second parts, said third part including an element engaging the second named element of said second part to form an assemblage of the three parts, and then moving the three part assemblage to a trimming station in the production of the final end three part product.

2. A method as defined in claim 1, wherein the engaged elements of the first and second parts form a pivotal coupling between said first and second parts,

3. A method as defined in claim 1, wherein the engaged elements of the second and third parts form a pivotal coupling between said second and third parts.

4. A method as defined in claim 1, wherein the engaged elements of the first and second parts form a pivotal coupling between said first and second parts, and the engaged elements of the second and third parts forming a pivotal coupling between said second and third parts.

5. A method as defined in claim 1, wherein the first and third parts are fashioned to form interengaging coupling hooks.

6. A method as defined in claim 1, wherein the second named part comprises a lock lever including a fingerpiece portion formed upon a projecting tongue of the first part.

7. A method as defined in claim 6, wherein the first and second parts are fashioned to form interengaging means checking one directional movement of the second part with respect to said first part.

8. A method as defined in claim 1, wherein the elements of the couplings between the parts are pivotal, providing swinging movement of the second part on the first part and the swinging movement of the third part on the second part, fashioning the third part to form a forked end receiving end portions of the first and second parts when the respective parts are in collapsed position with respect to each other, and said first and third parts being fashioned to 'form interengaging coupling hooks.

References Cited UNITED STATES PATENTS 2,266,432 12/1941 Morin et al. 164-111 2,743,517 5/1956 Everett 29-529 2,768,415 10/1956 Morin 164--90 2,819,494 1/1958 Morin 164-90 3,195,228 7/1965 =Beacham 29430 THOMAS H, EAGER, Primary Examiner. 

